Fix runtime error: replace .launch() with uvicorn.run() for FastAPI

The app was calling .launch() on a FastAPI object which doesn't have
that method. For sdk:docker with FastAPI, use uvicorn.run() instead.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app.py

@@ -795,10 +795,10 @@ def create_agent_office_with_ws():
 
 # ========== Main Entry Point ==========
 
-if __name__ == "__main__":
-    # Create and launch the Agent Office with WebSocket API
-    app = create_agent_office_with_ws()
+# Create the app for uvicorn (sdk:docker)
+app = create_agent_office_with_ws()
 
+if __name__ == "__main__":
     # Get environment variables with fallbacks
     server_name = os.getenv("GRADIO_SERVER_NAME", "0.0.0.0")
     server_port = int(os.getenv("PORT", "7860"))
@@ -809,8 +809,6 @@ if __name__ == "__main__":
     print(f"[Agent Office] Base directory: {BASE_DIR}")
     print(f"[Agent Office] WebSocket API enabled at /api/thoughts")
 
-    app.launch(
-        server_name=server_name,
-        server_port=server_port,
-        share=False
-    )
+    # Use uvicorn to serve the FastAPI app (not .launch())
+    import uvicorn
+    uvicorn.run(app, host=server_name, port=server_port)